Equipment for liquid transporting vessels



3 Sheets-Sheet l KUNAN Nwlnwb R. L. HAGUE UBSR ObRvU Original Filed Oct.21

Dec. 8, 1931.

EQUIPMENT FOR LIQUID TRANsPoRTING vEssELs Dec. 8, 193'1. R. l.. HAGUEV1,835,645

EQUIPMENT FOR LIQUID-TRANSPORTI'NG VESSELS @riginal Filed oct. 21, 192e3 sheets-sheet 2v COOLER Cowan/smrev TANK SUMMER TANK HA 7CH vwefntoz R,L HAG UE Dec. 8, 1931. R. L. HAGUE 1,835,645

EQUIPMENT FOR LIQUID TRANSPORTING VESSELS Original Filed Oct. 21, 1926 3Sheets-Sheet 5 KENT PIPE VE 7' P/Pa 7'o Mar/'izan N To Nqsrffm wuenozRL. HAGUE Patented Dec. 8, 19731 UNITED.

noBEcRT- L. maenner iro-Rx, Assni1vrin.froy STANDARD on.. Dnvnnorrmn'r IcoMrANY, A conromrrron ornnnnwnnri' Application ined october 21,Y 1926,serie-i ne.V 143,278. Renewed septeniber 2s, i931.

. This. invention relatesto the equipment ofvessels' for thetransportation of. liquids, especially bulk oi'lV carrying vessels, andin= cludes-A improvements which make it .practical to transport volatileliquids, suchzas gasolines, naphthas, etc.,:in the hold, cargo tanks andor eompartmentswith aminimum evaporation loss. f These improvements`comprise principally means fordisposingofl vapors from theliquidicargoiand? heat' `insulating Fig. 3 is an enlarged perspectiveview of.

the pipe connections about the foot of the foremast; and n v Fig. 4 is aside elevation of the connection of the vapor line to one of the storagetanks.` Referring first to Fig. 1 of the drawings,i

reference letter A denotes the upper deck of a bulk oil carrying vesselhaving the main hatch B, the main cargo or storage tank hatches l, 2, 3and 4 and the summer tank hatches 5 and 6. It will be unnecessaryV todescribe the installation with reference to the amidship and aftcargo-tanks, since it is in all essential respects like the forwardinstallation. The port summer tank 5 is to be used as an expansion tankfor cargo in the particular case illustrated, to receive any overflowfrom the other tanks; For simplicity, the pipes for supplying the kcargoto the-tanks and the overflow pipes are not illustrated.

Vapors from the main cargo tanks 1, 2, 3 and 4 pass into a pipe 7through branch pipes 8, 9, 10 and 11, respectively, and from the summertank 6 through pipe 12. The pipe 7 has a branch pipe 13 which isconnected with a vent pipe 14 (Fig. 3) extending up theforemast .15 toa'point near the masthead. The

pipe 13 also connectedwith apipe 16 WhCh leads'` toa compressorflr. Avalve14 inthe pipe 14vv and` a valve/13" in the pipe 13 control the flowthrougl'r these pipes.`

,A -The summer tank 5 is connected bya vapor pipe18'with. avent pipe 19,which extends up theforemast, and also with (the pipe 16.

Valveseliand 19.- lare provided in the pipes n 18 *and -K 19,1resp'.ectively',v for directing the z The compressor 17 dischargesthrough pipe QO'int'of acooler 21 from which the condensate andfairy-remaining gas V-or vapor pass: to

the condensatestank 22. A vent pipe 23 conf" nects the u-pperfportionoftheA tank 22xwith they ventQpipe' 14 extending up the foremast.Condensate is returnedffrom tank 22 through ai pipe 235 to the forwardlillingY connection 24,01' the salvagedcondensableconstituents i may beotherwise disposed of, as. desired.

Fig.`4 illustrates a suitable connectionl for 'withdrawing vaporsfromthe storage tanks,

referencebeing made particularly tothe tank .ha-ving the ,hatch 4, Fig.y1. 'A pipe. 25- is inV open communication with the ystorage tankthrough the-.hatc-hvt and is connected with 'an'. automatic pressure 1;and vacuum relief valve 2.6; The valve may be set to open at a vpressurewithin the-tank of about quiredby the strength of the tanks andother 1facto-rs. [A llame arrestor 27 is installed in a kpipe 28 connected withthe pipe 11 which discharges intothe vapor pipe 7 'As an addedprecaution', duplicate pressure and vacuum valves maybe lprovided on thesummer tank Y connection. Pressure gauges (not shown) are provided ataconvenient pointto indicate the pressure-on the tanks. l v Y When thevapor-pressure inthe cargo tanks exceeds the-pressure at which therelief valves F open, vapors pass throughthe several branches into.- theVmain vapor pipe system 7,

17 3 Yapors from Vthe. port. summertank @5 Fae r Y stood that the seaWater is discharged more similarly pass through pipe 18, valve 18 (valveY19 being closed), and pipe 16 to the compressor. scribed above. If theamount Vof vapors is 5 not suiiicient to justify running the compressor,thevalves 13 and 18 are closedand the valvesla rand 19 are opened,permitting the vapors to be vented through the pipesll and .19, leadingto the masthead.

tion in the vessels tanks asmuch as possible, the deck overlying thesetanks is dividedinto compartments by vlongitudinal and'transi versebaiiie .plates denotedV respectively by:

These to form-compartments on the deckV surface numerals 29 and 30, 30(Fig. 2). baiile plates Yserve as Weirs or .damsto'retain Waterdischarged from nozzles 31., 32 and v33, supplied trema pipe system '34,into which Y Water is pumped from'the oceano'r other body of Water beingtraversed. 1 The baiiie plates .have perforations 35 .at suchIa heightasto form step-Wise'vpools of Water.- VIn this v.Way a fair uniformity .rof depth is'main'tained' over the deck, notwithstandingfits curvature.vltfWill be underor less centrally vonthe deck, rasrshovvn,VY and vfiowsthrough theperforations from each compartment to thenext lowercompartment.

Holes-V36 vare formed in the bulwark 37 and Condensatie is returned asdev In ordervt'o reducethe amount of Valporiza-fv V Y y x *ing 4all thevapors vto the said discharge pipe each tank, means connected to saidvapor pipe and adapted to remove condensable constituents from saidvapors, a receiver for such constituents, a pipe for forwarding the sameto at least one of the tanks, and a pipe for discharging incondensableconstituents from the-receiver atapointremote from the deck of the ship.

i .3. rllhe combination according to claim 2, in vWhichvalve `meansV areprovided for divertfor incondesnable constituents.

'4511i combination with the liquid cargo tanks (of a bulk loil carryingvvessel, longitudinal and transverse baliie plates arranged adjacentsaid tanks,v meansforimaintaining pools of Vvvaterm said compartmentsand for continuously.supplying cooling Water to Said pools, means vfordischarging thewater from 1 sonner mikem through theseholes' the waterfio-Ws lfrom the outer compartments against aside shield and down thevessels sides. Y Y g v 1 The heatfinsulation system'r-efe'rred to ismore uparticularly describedv 'and claimed in my United States patentapplication Serial No. -143,279,1le'd'of even dateherewith.` y

I prefer to use the Water-flooding' arrangement described in connectionwith the vapor recovery system, lespeciallyfjwhen lvolatile liquidsarefbeing transported. 'Hovvever, t-he vapor lrecovery system may bepractically used alone. Various changes and Valternative arrangementsmay be madev within the scope of the appendedV claims, in Whichjit 1s myi-ntention to claim all. novelty inherent Vin the invention as broadlyas the prior art permits. 'VI-claim?V y Y Incombination witha'positivelyl cooled liquid'cargotank of a Ybulk oil carrying vessel,avapor pipe adapted to convey vapors f from said'tank, avent pipevconnected to said vapor pipe and adapted to discharge at a point remoteYfrom t'hevessels deck, means vconnected to said vapor pipe land adaptedto compress and cool the vapors, a pipe for forwarding, to any of thevvessels cargo tanks, condensate formed by the compressing and cooling,and loW-directingvalves in the said vapor pipe and vent pipe, wherebythe vapors may be diverted either to the ventpipe or to thecompressingand lcool-ing means.

2. In combination with the positively cooled liquidcargo tanks-of a bulkjoil'carry ing vessel,'a vapor pipe'receiving vaporsfrom

